Answer:
In cross-sectional research, data is collected on a sample of people on a single occasion.
Explanation:
Cross-sectional research is a type of study in which data is observed, analyzed and collected in a single point in time from various subjects.
Contrary to this, a longitudinal study would observe the same subjects during an extended period of time.
In this case, data is collected from the subjects on a single occasion, proceeding to examine any potential relations between the variables based on the hypotheses.
